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/*
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "GraphicsTypesGL.h"
#include <type_traits>
#include <wtf/Vector.h>
template<typename... Types>
struct GCGLSpanTuple {
GCGLSpanTuple(Types*... dataPointers, size_t bufSize)
: bufSize { bufSize }
, dataTuple { dataPointers... }
{ }
template<typename... VectorTypes>
GCGLSpanTuple(const Vector<VectorTypes>&... dataVectors)
: bufSize(
[](auto& firstVector, auto&... otherVectors) {
auto size = firstVector.size();
RELEASE_ASSERT(((otherVectors.size() == size) && ...));
return size;
}(dataVectors...))
, dataTuple { dataVectors.data()... }
{ }
template<unsigned I>
auto data() const
{
return std::get<I>(dataTuple);
}
template<unsigned I>
auto span() const
{
return unsafeMakeSpan(std::get<I>(dataTuple), bufSize);
}
const size_t bufSize;
std::tuple<Types*...> dataTuple;
};
template<typename T0, typename T1>
GCGLSpanTuple(T0*, T1*, size_t) -> GCGLSpanTuple<T0, T1>;
template<typename T0, typename T1, typename T2>
GCGLSpanTuple(T0*, T1*, T2*, size_t) -> GCGLSpanTuple<T0, T1, T2>;
template<typename T0, typename T1, typename T2, typename T3>
GCGLSpanTuple(T0*, T1*, T2*, T3*, size_t) -> GCGLSpanTuple<T0, T1, T2, T3>;
template<typename T0, typename T1, typename T2, typename T3, typename T4>
GCGLSpanTuple(T0*, T1*, T2*, T3*, T4*, size_t) -> GCGLSpanTuple<T0, T1, T2, T3, T4>;
template<typename T0, typename T1>
GCGLSpanTuple(const Vector<T0>&, const Vector<T1>&) -> GCGLSpanTuple<const T0, const T1>;
template<typename T0, typename T1, typename T2>
GCGLSpanTuple(const Vector<T0>&, const Vector<T1>&, const Vector<T2>&) -> GCGLSpanTuple<const T0, const T1, const T2>;
template<typename T0, typename T1, typename T2, typename T3>
GCGLSpanTuple(const Vector<T0>&, const Vector<T1>&, const Vector<T2>&, const Vector<T3>&) -> GCGLSpanTuple<const T0, const T1, const T2, const T3>;
template<typename T0, typename T1, typename T2, typename T3, typename T4>
GCGLSpanTuple(const Vector<T0>&, const Vector<T1>&, const Vector<T2>&, const Vector<T3>&, const Vector<T4>&) -> GCGLSpanTuple<const T0, const T1, const T2, const T3, const T4>;
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